Abstract: A pair of pivotable arms in a clamp in a personal trainer may be spring biased to a closed position as on a door frame. A lock retaining the clamp in the closed position includes a member manually actuatable to release the clamp from the door frame. A clasp on the clamp holds a first belt in a wrapped and frictional relationship. In one embodiment, the second end of the first belt is retained by a resistance unit which is disposed on a handle adapted to be manually gripped by the user. The resistance unit has bars which receive the belt in a frictional and tensioning relationship to retain the belt. Collars on the handle retain a harness shaped to envelope the user's face. The harness may be moved or rotated relative to the handle to exercise muscles in selective portions (e.g. neck or back) of the user's body. In another embodiment, a second belt engaged by the resistance unit extends beyond the resistance unit.